Groton Airport
Aircraft Accident/Incident Report

Groton, Connecticut 06340
Friday, June 2, 2006 14:40 EDT

NTSB Narrative Summary Released at Completion of Accident

The crew briefed the Instrument Landing System approach, including the missed approach procedures. Weather at the time included a 100-foot broken cloud layer, and at the airport, 2 miles visibility. The approach was flown over water, and at the accident location, there was dense fog. Two smaller airplanes had successfully completed the approach prior to the accident airplane. The captain flew the approach and the first officer made 100-foot callouts during the final descent, until 200 feet above the decision height. At that point, the captain asked the first officer if he saw anything. The first officer reported "ground contact," then noted "decision height." The captain immediately reported "I got the lights" which the first officer confirmed. The captain reduced the power to flight idle. Approximately 4 seconds later, the captain attempted to increase power. However, the engines did not have time to respond before the airplane descended into the water and impacted a series of approach light stanchions, commencing about 2,000 feet from the runway. Neither crew member continued to call out altitudes after seeing the approach lights, and the captain descended the airplane below the decision height before having the requisite descent criteria. The absence of ground references could have been conducive to a featureless terrain illusion in which the captain would have believed that the airplane was at a higher altitude than it actually was. There were no mechanical anomalies which would have precluded normal airplane operation.

NTSB Probable Cause Narrative

The crew's failure to properly monitor the airplane's altitude, which resulted in the captain's inadvertent descent of the airplane into water. Contributing to the accident were the foggy weather conditions, and the captain's decision to descend below the decision height without sufficient visual cues.

Event Information

Type of Event Accident
Event Date 6/2/2006
Event Day of the Week Friday
Time of Event 1440
Event Time Zone Eastern Daylight Time
Event City Groton
Event State CONNECTICUT
Event Country --
Zipcode of the event site 06340
Event Date Year 2006
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 411914N
Event Location Longitude 0720308W
Event Location Airport Groton
Event Location Nearest Airport ID GON
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport --
Airport Elevation 5
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1456 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 50
Weather Observation Facility ID GON
Elevation of weather observation facility 5
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 100
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) 17
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 8
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.84
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 2
Injury Total Minor 3
Injury Total None --
Injury Total Serious --
Injury Total All 5
Investigating Agency NTSB
NTSB Docket Number (internal use) 22817
NTSB Notification Source Connecticut State Police
NTSB Notification Date Jun 2 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Dec 20 2007 6:59AM
User who most recently changed record NTSB\johb
Basic weather conditions Instrument Meteorological Cond
FAA District Office Windsor Locks

Aircraft Involved

Aircraft #1

Aircraft Registration Number N182K
NTSB Number NYC06FA137
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Gates Learjet
Aircraft Model 35A
Aircraft Series Identifier --
Aircraft Serial Number 239
Certified Max Gross Weight 18300
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 7
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Jun 1 2006 12:00AM
Airframe hours since last inspection 12
Airframe Hours 11704
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Robertson Asset Management
Aircraft Owner Street Address 977 Centerville Turnpike
Aircraft Owner City Virginia Beach
Aircraft Owner State VA
Aircraft Owner Country USA
Aircraft Owner Zipcode 23463
Operator is an individual? No
Operator Name International Jet Charter, Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. Box 41005
Operator City Norfolk
Operator State VA
Operator Country USA
Operator Zip code 23541
Operator Code IJ9M
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code ACY
Departure City Atlantic City
Departure State --
Departure Country --
Departure Time 1347
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code GON
Destination City Groton
Destination State CT
Destination Country USA
Specific Phase of Flight Approach - final approach fix (FAF)/outer marker to threshold (IFR)
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 9 2007 7:42PM
User who most recently changed record MUZD
Since inspection or accident Time of Accident
Event Location Runway Number and Location 05
Runway Length 5000
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --